The Japanese Moon Melon

This picture and caption has been circulating around the internet recently:

This a Moon Melon , scientifically knows as asidus. This fruit grows in some parts of Japan , and it's known for it's weird blue color. What you probably don't know about this fruit, is that it can switch flavors after you eat it. Everything sour will taste sweet, and everything salty will taste bitter, and it gives water a strong orange-like taste. This fruit is Very expensive. It costs about ￥16000 JPY (which is about 200 dollars).

Unfortunately, as intriguing as the moon melon sounds, it's just the product of digital color effects.

Clovegarden.com lists a large variety of melons, including some odd ones such as Christmas Melon, Citron Melon, Collective Farm Woman Melon, Japanese Melon, Santa Claus Melon, Red Moon Melon, and Persian Melon. But no blue-colored Japanese Moon Melon.

From an article on disabled-world.com, I found this list of fruits and vegetables that legitimately do come in shades of blue: